Fountain pen



July 23, 1940. LN. slMKOvxTs FOUNTAIN PEN 5 Shee 11s-Sheet l Filed Hay 18, 1938 -tY\\\\\\\\\\W\V\\\\\\\`\\\\\\\\\\Y\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ n klv, 7..,

July 23, 1940.

lN. SIMKOVITS l FOUNTAIN PEN Fileduay 18, 1938 3 Sheets-Sheet 2 3 Sheets-Sheet 3 N. SIMKOVITS FOUNTAIN PEN Filed May 18, 1958 July 23, 1940.

. Patented-July 194,0

PATENT oFFlcr.

FOUNTAIN PEN Nikolaus Smkovits, Vienna, Germany, assigner to Eugen Wetzel, Stuttgart, Germany Application May l18, 1938, Serial No. 208,599. Re,-

newed April 17, 1940. In Germany May 20,

' 8 Claims.

, This invention relates to a fountain pen ci the suction piston type which is -characterized in that in the sleeve-shaped casing a reservoir serving` for accommodatingconcentrated ink, dyeo stuff or the like is slidably mounted which at the same time is constructed as or connected with the suction piston. An immovable guide rod connected with the ink duct is introduced into the dyestuffv container and has a recess so located that, when the container is pushed forward, this recess is in the lnk reservoir of the pen. The dyestuif container with the suction piston is screwed backwards and forwards in the pen body by means of a screw spindle or the like rotatable in the rear end of the casing. If it is desired to prepare writing ink in the reservoir oi the pen, the suction piston with the dyestuff container is moved completely forward with the result that the recess in the guide rod is filled with dyestufi. Hereupon the nib and ink duct are dipped into a vessel containing water. By retracting the suction piston with the dyestufi container water is drawn into the ink reservoir and mixes with the dyestuff remaining in the j recess in the guide rod, so that automatically writing ink is formed. The dyestuff container may be so constructed that it can be removed from the pen casing and refilled, or replaced by -a full container.

Several embodiments of the invention are illustrated by way of example inthe accompanying drawings, in whicht Fig. 1 shows a fountain pen in longitudinal Section with piston and container screwed to the front end thereof,

Fig. 2 shows .in part longitudinal section the fountain pen with retracted piston and container,

Fig. 3 is an elevation of the container with guide rod and lling device, y

Fig. 4 is a cross-section on line A-B of Fig. 1,

Fig. 5 shows in longitudinal section a modified form of construction vwith piston and dyestui container in foremost position,

Fig. 6 is a longitudinal section of the construcy r tion shown in Fig. 5 with the pistonv and dyestuff container in retracted positie.

Fig. 'l is an elevation of Fig. 6,

Fig. 8 shows in longitudinal section another formV of construction with advanced piston and container,

Fig. 9 is a longitudinal section of the construction shown in Fig. 8 with retracted piston and container,

Fig. l0 is apart longitudinal section of the (Cl. 1Z0-42) rear end of a fountain `pen of yet another form of construction, I

Fig. 11 shows the ink container partly in elevation and'partly in longitudinal section.

In the sleeve-like casing I of the fountain pen a container 2 for accommodating concen' trated ink, dyestui or the like is longitudinally shiftable. On the front or rear end of the ink container pistons 3 and li are arranged which fit snugly in the casing I. The'container 2 has in its rear end an extension 5 forming a continuation of the piston 4 and connected with a disc (i constructed as a nut. The container 2 may also be constructed as a` piston, in which case the separate pistons 3, 6i become unnecessary. A closing plug I is removably screwed into the rear end of the casing I and in this plug a knob 8 is loosely rotatable. A srewspindle 9 is fixed at one end in the knob 8 and engages the nut 6. An inkduct I0 with nib II is removably fitted in the front end of the pen cas'- ing I. A guide rod I2 is loosely or rigidly connected to the ink duct I0 and extends `through the pistons 3 and 4 and the dyestui container 2, According to the drawings the front end of the guide rod I3 rests loosely on the ink duct lIl. To improve the ink feed,the front en d I3 of the guide rod I2 is offset to form a pin,` At a point intermediate its length the guide rod I2 has a recess I which fills with concentrated ink when the container is slid thereover. Behind the recess I4 an annular notch I5 is formed in the rod I2 and serves a gauge mark when filling the container 2. The pistons 3 and 4 and also the piston part Sa'may be of cork, rubber or other good packing material, so that the guide rod and also the ink reservoir I6 are hermetically closed. The nut S on the container 2 is longitudinally shiftable in the pen casing but locked against rotation.

When it is desired to make the fountain pen readyfor use, the container 2 withthe pistons 3,.3a and d is moved forward by the turn knob 8. screw spindle 9 cooperating with the nut 6, until the front piston part 3a comes to bear against the shoulder I'I with the result, that the recess It fills with concentrated ink. The front end of the pen with the ink duct i0 and nib II is then dipped into water, whereupon the knob 8 is turned in the opposite direction and the screw spindle 9 retracts the pistons 3, 3a and 0 and the ink container 2 in the pen casing i. By the retraction of the pistons 3 and 3a water is drawn into the ink reservoir I6 and immediately mixes with the concentrated ink taken from the container 2 by the recess I4 in the rod I2, to form writing ink. 'Ighe recess I4 in rod I2 is so large that the quantity of concentrated ink taken from the container 2 produces a correct mixture of writing ink in the reservoir I6. When the ink in the reservoir I6 has been used up, the procedure can be repeated until the dyestuff container 2 is empty. This container 2, after the plug I has been unscrewed, can be withdrawn at the rear end of the casing I (Figs. 1 to 4), for refilling. The rod I2 held between the pistons 3, 4 is removed with the container 2. For filling the container 2, the rod I2 is pulled forward until the bore 2| in the rear end of the container is free, this being indicated by the appearing of notch I5 at the front end of the container (Fig. 3).v The container can then be lled by any A suitable device 22 such as that shown in Fig. 3.

According to Figs. 5 t0 7 the rear part I8 of the ink container 2 has a steep pitched screw thread which is screwed into -the internal screw thread Iii-in a sleeve 20 xed in a hollow knob 23.` The sleeve 20 has near its front end a shoulder 24 which slides on an inwardly projecting iiange 25 on the rear end of a sleeve.;26 which is screwed on to the rear end of the pen casing I. The guide rod I2 is guided in the screw threaded extension I8 on the rear end of the container 2. A sleeve 2'I is inserted in the extension I 9 to form a tight closure with the rod I2. According to Figs. 5 and 6 the guide rod I2 has an annular recess I4. By turning the knob 23 the sleeve 20 with the portion provided with internal screw thread I9 is turned with the result that the screw threaded extension I9 of the container 2 is moved backwards or forwards according to the direction of rotation. A longitudinal groove 28 is formed in the upper part of the inner wall of the casing I. In this groove 28 engages a pin 29 fixed in the container 2 so that the container can be shifted longitudinally but not turned. According to the construction illustrated in Figs. 5 to 7 the guide rod I2 is made in'one piece with the ink duct I0. The concentrated ink is taken from the container 2 and the ink reservoir I6 lled in the same'manner as in the construction shown in Figs. l. and 2. When the container 2 is advanced, the recess I4 in the guide rod I2 lls with concentrated ink which, when the container is retracted, is withdrawn therefrom and mixed with water drawn into the reservoir I6 at the same time to form writing ink. The container 2 is filled with concentrated ink by unscrewing the sleeve 26 with the knob 23 from the casing I. The container is then pulled out of the rear end of the casing I until the open upper end 0f the hollow extension I8 of the container 2 extends beyond the rear end of the guide rod I2 and is ready for filling.

According to Figs. 8 to 11 the guide rod I2 is only of such length that it projects a short distance into the container 2. of the container 2 is closed at its rear end by a wall 30. An internally screw threaded sleeve` 32 is fixed in the knob 3i, and the extension I8 of Athe 'container 2 can be screwed backwards and forwards in this' sleeve 32. A screw threaded sleeve 33 Iscrewed on t'o the rear end of the casing I has a shoulder 34 which rests on a flange 35 formed on the front end of the screw sleeve 32.-

The container 2 is closed at its front end by a screw plug 36 connected to the piston 3. The ink duct I0 is preferably made in one piece with the guide rod I2 and tapered at its upper end to facilitate its introduction into the container 2.

The extension I 84 According to Fig. 8 the container 2 is screwed forward with the piston 3 by the knob 3| until the recess I4 in the rod I2 enters the container 2. The ink reservoir I6 is filled with water for producingv writing ink in the manner already described. The inkduct I0 with the nib II is dipped into a vessel containing water and by turning the knob3I the piston 3 is retracted with the container 2 until it reaches the position illustrated in Fig. 9. During the retracting of piston 3 and container 2 water is sucked into the reservoir I6. At the same time the concentrated ink removed by the recess I4 in the guide rod I2 during the retraction movement mixes with the water to form writing ink. This operationmay be repeated, when the ink in the reservoir I6 is exhausted, until the container 2 is empty. Owing to the considerable shortening of rod I2, owing to the container 2 being closed at its end by the wall 30 and as the screw extension I8 is hollow. a greater quantity of concentrated ink is taken from the container 2. The container 2 is constructed in such a manner that, as soon as it has been emptied into the reservoir, it can be replaced by a fresh full container. To enable this to be effected, the lled container 2 with the screw extension I8 and closed by a screw plug 31 which is placed on the market, the plug to be removed when the container is required for use, and a plug 36 with piston 3 is screwed in instead. To exchange the container 2, the sleeve 33 can be unscrewed from the upper end of the pen casing I with the knob 3|, whereupon the container 2 is withdrawn from the casing and a fresh container inserted. The fresh full con-` tainer 2 is inserted by turning the pen casing I so that the nib is directed upwards, whereupon the container 2 can be inserted without spilling any of the concentrated ink. The other parts may be of any desired construction.

According to Fig. 10 an annular groove 36 may be provided near the front end of the sleeve 32 and one or several pins 39 fixed in the sleeve 33 engage in this groove'and form a guide for the knob 3|. The container 2, in all forms of construction, may be secured against rotation in the casing I by pins and groove, or the frictional resistance of the container 2 with the pistons 3 and 4 is made greaterthan the frictional resistance of the spindle y9 in the nut 6 or of the screw sleeve 32 on the screw extension I8 of the container.

I claim:

1. A fountain pen with concentrated ink solution comprising in combination a casing, having an ink reservoir at its front end, an ink duct extending from the front end of the casing into said ink reservoir, a container for concentrated ink constructed as piston, and longitudinally slidable in said casing to draw water into said ink reservoir through said ink'duct, a screw device for longitudinally shifting said container in said casing, an ink duct extending into said ink reservoir at the front end of said casing, and an extension of said ink duct extending through said ink reservoir into said container and adapted to convey a small quantity of concentrated ink from said container into said ink reservoir, during the displacement of said container to mix with the water drawn into the ink reservoir and to form writing ink.

2. A fountain pen as specified in claim 1. in which the extension of the ink: duct is hermetically guided in the container and has a recess intermediate its length adapted to carry a small quantity of ink from said container into the ink reservoir during the shifting of said container.

3. A fountain pen as specified in claim 1, in which the extension of the ink duct is hermetically guided in the two ends of the container and has a recess intermediate its length adapted to carry a small quantity of ink from said container into the ink reservoir during the shifting of said container.

4. A fountain pen as specified in claim 1, in which the extension of the ink duct is hermetical- 1y guided in the container and has a recess intermediate its length adapted to carry a small quantity of ink from said container into the ink reservoir during the shifting of said container, said recess being so located in said extension that it is in said container when the container is in its forward position and in said ink reservoir when said container is in its retracted position.'

5. In a fountain pen as specied in claim 1, a screw threaded extension constructed as a spindle on the rear endof the container and a turn- 7. A fountain pen as specified in claim 1, in

which the piston formed on the front end of the container has a central bore forming a packing for the extension of the ink duct.

8. A fountain pen as specied in claim 1, in which the container is removably inserted in the casing after the removal of the screwing device and at the same time constructed as vessel to be sold separately and is closed at one end by a wall of the container and at the other end by a removable plug, and the piston has a screw threaded portion adapted to be screwed into the container after the removalof said plug.

NIKOLAUS SIIWKOVITS. 

